hi, I got 2 questions to ask.
1: for the the plywood support, how do you mount it to the wall? do you simply drill it? is there any fittings in the walls before you drill the supports to the wall??
2: I did tried a test before, but caused a crack while drilling a crimp hold to the outer plywood. Is it bcos of the plywood thickness? or the type of scews/fittings/boltings?
Hope you can answer as I looked around and I've been getting different opinions. Thanks